Installation
8
UDC2500 Universal Digital Limit ControllerProduct Manual
8/05
Pre-installation Information
If the controller has not been removed from its shipping carton, inspect the carton for
damage then remove the controller.
•
Inspect the unit for any obvious shipping damage and report any damage due to
transit to the carrier.
•
Make sure a bag containing mounting hardware is included in the carton with the
controller.
•
Check that the model number shown on the inside of the case agrees with what you
have ordered.
2.2 Condensed Specifications
We recommend that you review and adhere to the operating limits listed in Table 2-1
when you install your controller.
Table 2-1 Condensed Specifications
Analog Inputs
Accuracy:
± 0.25% of full scale typical (± 1 digit for display)
Can be field calibrated to ± 0.05% of full scale typical
16-bit resolution typical
Sampling
Rate: Both inputs are sampled six times per second
Temperature Stability:
± 0.01% of Full Scale span /
˚
C change—typical
Input Impedance:
4-20 Milliampere Input: 250 ohms
0-10 Volt Input: 200K ohms
All Others: 10 megohms
Maximum Lead Wire Resistance:
Thermocouples: 50 ohms/leg
100 ohm, 200 ohm and 500 ohm RTD: 100 ohms/leg
100 ohm Low RTD: 10 ohms/leg
Analog Input Signal
Failure Operation
Burnout Selections:
Upscale, Downscale
Thermocouple Health:
Good, Failing, Failure Imminent or Failed
Stray Rejection
Common Mode
AC (50 or 60 Hz):
120 dB (with maximum source impedance of 100 ohms) or ± 1 LSB (least
significant bit) whichever is greater with line voltage applied.
DC:
120 dB (with maximum source impedance of 100 ohms) or a ±1 LSB whichever is
greater with 120 Vdc applied.
DC (to 1 KHz):
80 dB (with maximum source of impedance of 100 ohms) or ±1 LSB
whichever is greater with 50 Vac applied.
Normal Mode
AC (50 or 60 Hz):
60 dB (with 100 % span peak-to-peak maximum)
Digital Inputs (One)
(Optional)
+30 Vdc source for external dry contacts or isolated solid state contacts. Digital Inputs are
isolated from line power, earth ground, analog inputs and all outputs except for the Second
Current Output.
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